CN210835220U - Lens assembly and laser radar - Google Patents
Lens assembly and laser radar Download PDFInfo
- Publication number
- CN210835220U CN210835220U CN201921401543.9U CN201921401543U CN210835220U CN 210835220 U CN210835220 U CN 210835220U CN 201921401543 U CN201921401543 U CN 201921401543U CN 210835220 U CN210835220 U CN 210835220U
- Authority
- CN
- China
- Prior art keywords
- lens
- receiving
- transmitting
- lens barrel
- barrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The application discloses lens subassembly and laser radar, the lens subassembly includes: the fixed frame comprises a transmitting lens barrel and a receiving lens barrel which are arranged side by side, and the transmitting lens barrel and the receiving lens barrel are of an integrated structure; the emission lens group comprises at least one emission end lens and is arranged in the emission lens barrel; the receiving lens group comprises at least one receiving end lens and is arranged in the receiving lens barrel; and the inner sides of the cylinder walls of the transmitting lens barrel and the receiving lens barrel are respectively provided with a limiting step for limiting the positions of the transmitting lens group and the receiving lens group. This application adopts integral type frame construction equipment transmission lens group and receives the lens group, and structural stability is good, non-deformable, and the precision is high, the equipment of being convenient for.
Description
Technical Field
The application relates to the technical field of laser radars, in particular to a lens assembly and a laser radar.
Background
The transmitting and receiving system is an important component of the laser radar, and needs to have good beam shaping/collimation performance, a single lens element often cannot meet the requirement, three or more lens groups are mostly needed to meet the collimation requirement, a plurality of lenses are installed on the laser radar, and the assembly process is complex.
At present, the lens assembly of the mechanical rotary laser radar generally adopts an independent edge cutting type frame, for example, Chinese patent application 'a lens assembly for laser radar' (application number: 201821395639.4), a transmitting lens assembly and a receiving lens assembly are respectively assembled into two edge cutting type frames, then the assembled two assemblies are respectively installed on a fixing device, and a thin partition plate is inserted between the two edge cutting type frames to separate the transmitting lens assembly and the receiving lens assembly.
Firstly, because the lens cone all adopts the side cut structure (namely side cut formula frame), such structure is out of shape easily, and radial size is difficult to control, and the tight time elasticity of lens of installation influences optical imaging. Secondly, because the diaphragm is too thin and flexible, tolerances are difficult to control and installation is difficult. Moreover, an additional structural part is needed in the laser radar to fix the correction sheet and the optical filter so as to respectively install the correction sheet and the optical filter on the light path near the laser and the receiver, and the installation of the correction sheet and the optical filter is increased due to the compact structure space of the system, so that the process is complicated and the installation is difficult.
Disclosure of Invention
An object of this application is to provide a lens subassembly and laser radar, adopts the integral type structure, and stability is good, non-deformable, and the precision is high.
To achieve one of the above objects, the present application provides a lens assembly comprising:
the fixed frame comprises a transmitting lens barrel and a receiving lens barrel which are arranged side by side, and the transmitting lens barrel and the receiving lens barrel are of an integrated structure;
the emission lens group comprises at least one emission end lens and is arranged in the emission lens barrel;
the receiving lens group comprises at least one receiving end lens and is arranged in the receiving lens barrel;
and the inner sides of the cylinder walls of the transmitting lens barrel and the receiving lens barrel are respectively provided with a limiting step for limiting the positions of the transmitting lens group and the receiving lens group.
As a further improvement of the embodiment, the device further comprises a plurality of pressing rings; and the pressing ring is arranged on one surface of each of the transmitting end lens and the receiving end lens, which is far away from the limiting step, so that the transmitting end lens and the receiving end lens are close to the limiting step.
As a further improvement of the embodiment, the pressing ring is an annular or C-shaped gasket.
As a further improvement of the embodiment, an adhesive injection hole is formed in the barrel wall, and is used for injecting an adhesive to fix the transmitting end lens and the receiving end lens in the transmitting lens barrel and the receiving lens barrel, respectively.
As a further improvement of the embodiment, the correcting sheet is arranged on the fixed frame and positioned at one end of the emission lens group far away from the object side; and the optical filter is arranged on the fixed frame and positioned at one end of the receiving lens group far away from the object side.
As a further improvement of the embodiment, the correction sheet is disposed inside the emission lens barrel; the optical filter is arranged in the receiving lens cone.
As a further improvement of the embodiment, a locking V groove and/or a flow channel V groove matched with an external system structure are/is arranged on the outer side of the fixed frame; the locking V-shaped groove is used for receiving a fastening screw matched with the external system structure, and the flow channel V-shaped groove is used for injecting an adhesive so as to fix the lens component in the matched structure of the external system.
As a further improvement of the embodiment, the lens barrel further comprises an end cover which is arranged at one end of the fixed frame opposite to the limiting steps of the transmitting lens barrel and the receiving lens barrel; and the end covers are provided with light through holes at positions corresponding to the transmitting lens cone and the receiving lens cone.
As a further improvement of the embodiment, the correction sheet and the optical filter are respectively disposed on two light-passing holes of the end cap.
The application also provides a laser radar, which comprises a light emitting unit, a light receiving unit and the lens assembly in any embodiment; the light emitted by the light emitting unit is output through the emission lens group of the lens component in a collimation manner; the receiving lens group focuses and couples the received light to the light receiving unit.
The beneficial effect of this application: adopt integral type frame construction equipment transmission battery of lens and receive battery of lens, structural stability is good, non-deformable, and the precision is high, the equipment of being convenient for.
Drawings
FIG. 1 is a schematic view of the assembly of a lens assembly according to example 1 of the present application;
FIG. 2 is an exploded view of the structure of FIG. 1;
FIG. 3 is a schematic sectional view of a fixing frame in embodiment 1;
FIG. 4 is a schematic cross-sectional view of the structure of FIG. 1;
FIG. 5 is a schematic cross-sectional view of a lens assembly according to example 2 of the present application;
FIG. 6 is a schematic view of an assembled lens assembly according to example 2 of the present application;
fig. 7 is a simplified schematic diagram of an optical path of the laser radar of the present application.
Detailed Description
The present application will now be described in detail with reference to specific embodiments thereof as illustrated in the accompanying drawings. These embodiments are not intended to limit the present application, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present application.
In the various illustrations of the present application, certain dimensions of structures or portions may be exaggerated relative to other structures or portions for ease of illustration and, thus, are provided to illustrate only the basic structure of the subject matter of the present application.
Also, terms used herein such as "upper," "above," "lower," "below," and the like, denote relative spatial positions of one element or feature with respect to another element or feature as illustrated in the figures for ease of description. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. When an element or layer is referred to as being "on," or "connected" to another element or layer, it can be directly on, connected to, or intervening elements or layers may be present.
Example 1
As shown in fig. 1-4, the lens assembly of this embodiment includes a fixed frame 10, an emission lens group 20, and a reception lens group 30. The fixed frame 10 includes a transmitting lens barrel 11 and a receiving lens barrel 12 arranged side by side, and the transmitting lens barrel 11 and the receiving lens barrel 12 are of an integral structure. The emission lens group 20 comprises at least one emission end lens, and is arranged in the emission lens barrel 11; the receiving lens group 30 includes at least one receiving end lens, and is disposed in the receiving lens barrel 12; the inner sides of the walls of the transmitting lens barrel 11 and the receiving lens barrel 12 are both provided with a limiting step 14 for limiting the positions of the transmitting lens group 20 and the receiving lens group 30. Adopt integral type frame construction equipment transmission lens group and receive the lens group, structural stability is good, non-deformable, and the precision is high, is convenient for assemble it to the system.
As shown in fig. 2 to 4, in this embodiment, the emission lens group 20 employs a cuckoo three-lens: a first emitter lens 21, a second emitter lens 22 and a third emitter lens 23. The reception lens group 30 also employs a cucko three-piece lens: a first receiver lens 31, a second receiver lens 32 and a third receiver lens 33. As shown in fig. 3 and 4, a plurality of limiting steps 14 are disposed in each of the transmitting lens barrel and the receiving lens barrel, and are respectively used for limiting the position of each transmitting end lens of the transmitting lens group 20 and the position of each receiving end lens of the receiving lens group 30. And a pressing ring is arranged on one surface of each transmitting end lens and one surface of each receiving end lens, which are far away from the limiting step 14, so that the transmitting end lens and the receiving end lens are close to the corresponding limiting step 14. The clamping ring can be a ring-shaped or C-shaped gasket, wherein a C-shaped aluminum alloy gasket is adopted. As shown in fig. 2, a first pressing ring 51 is provided under the first emitter lens 21 and the first receiver lens 31, respectively, a second pressing ring 52 is provided under the second emitter lens 22 and the second receiver lens 32, respectively, and a large annular pressing ring 53 is provided under the third emitter lens 23 and the third receiver lens 33. An end cover 40 is further disposed on one end of the fixed frame 10 opposite to the limit steps 14 of the transmitting lens barrel 11 and the receiving lens barrel 12, i.e. under the annular pressing ring 53, the annular pressing ring 53 is pressed against the transmitting lens group 20 and the receiving lens group 30, and the transmitting lens group 20 and the receiving lens group 50 are respectively assembled in the transmitting lens barrel 11 and the receiving lens barrel 12 with the annular pressing ring 53 as a buffer. Here, the end cap 40 is provided with a light passing hole 41 at a position opposite to the emission barrel 11 and the reception barrel 12, and the end cap 40 is locked with the fixing frame 10 by screws. In other embodiments, the end caps may be attached to the fixed frame by snaps, glue, or pins, among other means. In other embodiments, the distance between the transmitting end lenses of the transmitting lens group and the distance between the receiving end lenses of the receiving lens group can also be controlled only by the pressing ring, and a limiting step is not required to be arranged in the transmitting lens barrel and the receiving lens barrel.
As shown in fig. 3 and 4, in this embodiment, a cement injection hole 13 is formed on the barrel wall for injecting cement to fix the emission lens group 20 and the receiving lens group 30 in the emission barrel 11 and the receiving barrel 12, respectively, and the cement may be thermosetting cement or the like. During assembly, the first transmitting end lens 21, the first pressing ring 51, the second transmitting end lens 22, the second pressing ring 52 and the third transmitting end lens 23 are sequentially arranged in the transmitting lens barrel 11, and the first receiving end lens 31, the first pressing ring 51, the second receiving end lens 32, the second pressing ring 52 and the third receiving end lens 33 are sequentially arranged in the receiving lens barrel 12; then, an annular pressing ring 53 is installed, and the third transmitting end lens 23 and the third receiving end lens 33 are pressed at the same time; then the end cover 40 is installed, the end cover 40 is locked on the fixed frame 10, so as to assemble the transmitting lens group 20 and the receiving lens group 30 in the transmitting lens barrel 11 and the receiving lens barrel 12 respectively; finally, glue is injected into the adhesive injection hole 13 and cured to fix the transmitting lens group 20, the receiving lens group 30 and the pressing rings in the transmitting lens barrel 11 and the receiving lens barrel 12, respectively, thereby completing the assembly. The integral fixed frame structure is adopted, the transmitting lens cone and the receiving lens cone are stable in structure and not easy to deform, the dimensional accuracy of the lens cones can be well guaranteed, and relative errors can be effectively reduced when each lens is installed.
Of course, in other embodiments, the transmitting lens group and the receiving lens group may be fixed in the transmitting lens barrel and the receiving lens barrel, respectively, only by adhesive, so that the end caps may be omitted.
As shown in fig. 3, a locking V-groove 15 and/or a flow channel V-groove 16 may be further provided on the outer side surface of the fixing frame 10. When the lens assembly is installed in a laser radar system, the locking V-groove 15 is used for receiving a set screw of a laser radar optical rotor, and the flow channel V-groove 16 is used for injecting an adhesive to fix the lens assembly in a matching structure of the laser radar system.
Example 2
As shown in fig. 5 and 6, this embodiment is to add a correction sheet 60 and an optical filter 70 on the basis of embodiment 1, wherein the correction sheet 60 is located at one end of the emission lens group 20 away from the object side; the filter 70 is located at one end of the receiving lens group 30 away from the object side. In this embodiment, a correction sheet 60 is mounted on the end cap 40 corresponding to the light-passing hole 41 of the transmitting lens barrel to eliminate the influence of the laser radar housing on the optical system. An optical filter 70 is installed on the end cap 40 corresponding to the light-passing hole 41 of the receiving barrel to filter out other stray light interference for removing the laser signal. The transmitting lens cone, the receiving lens cone, the transmitting lens group, the receiving lens group, the correcting sheet and the optical filter are assembled into a whole and are installed in a structural member matched with the laser radar as a whole, so that the installation is easier, the number of structural members of a system is reduced, and the material management is convenient.
In other embodiments, the correction sheet may be directly placed in the emission lens barrel, and the optical filter may be directly placed in the receiving lens barrel.
Example 3
As shown in fig. 7, this embodiment provides a laser radar including a light emitting unit 80, a light receiving unit 90, and the lens assembly in any of the above embodiments. The light emitted from the light emitting unit 80 is collimated by the emitting lens group 20 of the lens assembly, and the receiving lens group 30 focuses and couples the received light to the light receiving unit 90. Here, the light emitting unit generally includes a plurality of semiconductor light emitting diodes (LDs or LEDs), and the light receiving unit generally includes a plurality of photodetectors.
The above list of details is only for the concrete description of the feasible embodiments of the present application, they are not intended to limit the scope of the present application, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present application are intended to be included within the scope of the present application.
Claims (10)
1. A lens assembly, comprising:
the fixed frame comprises a transmitting lens barrel and a receiving lens barrel which are arranged side by side, and the transmitting lens barrel and the receiving lens barrel are of an integrated structure;
the emission lens group comprises at least one emission end lens and is arranged in the emission lens barrel;
the receiving lens group comprises at least one receiving end lens and is arranged in the receiving lens barrel;
and the inner sides of the cylinder walls of the transmitting lens barrel and the receiving lens barrel are respectively provided with a limiting step for limiting the positions of the transmitting lens group and the receiving lens group.
2. The lens assembly of claim 1, wherein: the device also comprises a plurality of pressing rings; and the pressing ring is arranged on one surface of each of the transmitting end lens and the receiving end lens, which is far away from the limiting step, so that the transmitting end lens and the receiving end lens are close to the limiting step.
3. The lens assembly of claim 2, wherein: the pressing ring is an annular or C-shaped gasket.
4. The lens assembly of claim 2, wherein: and the cylinder wall is provided with an adhesive injection hole for injecting adhesive to fix the transmitting end lens and the receiving end lens in the transmitting lens barrel and the receiving lens barrel respectively.
5. The lens assembly of claim 1, wherein: further comprising:
the correcting sheet is arranged on the fixed frame and is positioned at one end, far away from the object side, of the emission lens group;
and the optical filter is arranged on the fixed frame and positioned at one end of the receiving lens group far away from the object side.
6. The lens assembly of claim 5, wherein: the correcting sheet is arranged in the transmitting lens cone; the optical filter is arranged in the receiving lens cone.
7. The lens assembly of claim 1, wherein: a locking V groove and/or a flow channel V groove matched with an external system structure are/is arranged on the outer side of the fixed frame; the locking V-shaped groove is used for receiving a fastening screw matched with the external system structure, and the flow channel V-shaped groove is used for injecting an adhesive so as to fix the lens component in the matched structure of the external system.
8. The lens assembly of any one of claims 1-7, wherein:
the end cover is arranged at one end of the fixed frame, which is opposite to the limiting steps of the transmitting lens barrel and the receiving lens barrel; and the end covers are provided with light through holes at positions corresponding to the transmitting lens cone and the receiving lens cone.
9. The lens assembly of claim 5, wherein:
the lens assembly further comprises an end cover, and the end cover is arranged at one end, opposite to the limiting steps of the emission lens barrel and the receiving lens barrel, of the fixed frame; the end cover is provided with light through holes at positions opposite to the transmitting lens cone and the receiving lens cone;
the correcting sheet and the optical filter are respectively arranged on the two light through holes of the end cover.
10. A laser radar comprising a light emitting unit and a light receiving unit, characterized in that: further comprising a lens assembly according to any one of claims 1-9; the light emitted by the light emitting unit is output through the emission lens group of the lens component in a collimation manner; the receiving lens group focuses and couples the received light to the light receiving unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921401543.9U CN210835220U (en) | 2019-08-27 | 2019-08-27 | Lens assembly and laser radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921401543.9U CN210835220U (en) | 2019-08-27 | 2019-08-27 | Lens assembly and laser radar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210835220U true CN210835220U (en) | 2020-06-23 |
Family
ID=71263536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921401543.9U Active CN210835220U (en) | 2019-08-27 | 2019-08-27 | Lens assembly and laser radar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210835220U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112230233A (en) * | 2020-10-14 | 2021-01-15 | 北醒（北京）光子科技有限公司 | Laser radar and assembling method thereof |
-
2019
- 2019-08-27 CN CN201921401543.9U patent/CN210835220U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112230233A (en) * | 2020-10-14 | 2021-01-15 | 北醒（北京）光子科技有限公司 | Laser radar and assembling method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102646981B1 (en) | Adjustable optical lens and camera module and aligning method thereof | |
| US8570672B2 (en) | Lens module | |
| US11656435B2 (en) | Imaging lens and camera module | |
| US20180259369A1 (en) | Rotary encoder | |
| EP3553581B1 (en) | Lens structure, manufacturing method thereof, and camera | |
| US7969668B2 (en) | Lens arrangement and lens module using same | |
| CN109005326B (en) | Imaging device and electronic apparatus | |
| KR20190131042A (en) | Separate camera lens, photographing module and electronic equipment | |
| CN210835220U (en) | Lens assembly and laser radar | |
| US20200049954A1 (en) | Lens module | |
| KR20140032091A (en) | Lens assembly and optical system including the same | |
| US7982979B2 (en) | Lens module | |
| US20140314424A1 (en) | Optical communication apparatus | |
| US11106020B2 (en) | Lens module and electronic device | |
| JP6764632B2 (en) | Lens module and electronic equipment | |
| US8363343B2 (en) | Lens barrel having an eccentricity adjusting mechanism | |
| CN111766672A (en) | Lens, camera and terminal | |
| CN211603804U (en) | Lens module and camera device | |
| JP2004246258A (en) | Taking lens and optical equipment using same taking lens | |
| JP2016051076A (en) | Barrel and imaging device | |
| US20110158636A1 (en) | Lens assembly and camera module using the same | |
| US11347018B2 (en) | Lens module | |
| US11327267B2 (en) | Lens module | |
| CN216436393U (en) | Laser module | |
| JP2020024398A (en) | Lens module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220218 Address after: 25 Singapore International Business Park, German Center, 03-60b (609916) Patentee after: Xuchuang Technology Co.,Ltd. Address before: 215000 No.8 Xiasheng Road, Suzhou Industrial Park, Jiangsu Province Patentee before: InnoLight Technology (Suzhou) Ltd. |
|
| TR01 | Transfer of patent right |